1345837961 has 8 divisors (see below), whose sum is σ = 1450917384. Its totient is φ = 1240980480.

The previous prime is 1345837921. The next prime is 1345837973. The reversal of 1345837961 is 1697385431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 239011600 + 1106826361 = 15460^2 + 33269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1345837961 - 2¹⁴ = 1345821577 is a prime.

It is a super-2 number, since 2×1345837961² = 3622559634537275042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1345837921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42776 + ... + 67241.

It is an arithmetic number, because the mean of its divisors is an integer number (181364673).

Almost surely, 2^1345837961 is an apocalyptic number.

It is an amenable number.

1345837961 is a deficient number, since it is larger than the sum of its proper divisors (105079423).

1345837961 is a wasteful number, since it uses less digits than its factorization.

1345837961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110971.

The product of its digits is 544320, while the sum is 47.

The square root of 1345837961 is about 36685.6642436797. The cubic root of 1345837961 is about 1104.0724964754.

The spelling of 1345837961 in words is "one billion, three hundred forty-five million, eight hundred thirty-seven thousand, nine hundred sixty-one".